Assets on the Fed’s balance sheet have shrunk since the central bank’s last rate-setting meeting on Aug. 10, declining to $2.279 trillion from $2.310 trillion. The bulk of the drop has come from the mortgage-backed securities portfolio, which falls as loans are paid off or mature. At last month’s meeting, the Fed said that it would reinvest the proceeds from that portfolio into Treasurys. Indeed, the central bank’s Treasurys portfolio has increased since August, and the Fed announced last week that it will purchase $27 billion more of Treasurys in coming weeks offsetting nearly all the decline seen in MBS since early August.

Outside of debt holdings, other assets were also declining. The Term Asset-Backed Securities Loan Facility, or TALF, ended in March, and is falling as the last loans made through the program mature. Liquidity swaps with foreign central banks have fallen back to the millions of dollars after jumping in the spring in response to European soveriegn debt concerns. Direct-bank lending was essentially flat, remaining at precrisis levels.

In an effort to track the Fed’s actions, Real Time Economics has created an interactive graphic that will mark the expansion of the central bank’s balance sheet. The chart will be updated as often as possible with the latest data released by the Fed.